From: Rabin Vincent Subject: [PATCH] crypto: tcrypt - Add debug prints Date: Wed, 18 Jan 2017 14:54:05 +0100 Message-ID: <1484747645-17463-1-git-send-email-rabin.vincent@axis.com> Cc: linux-crypto@vger.kernel.org, Rabin Vincent To: herbert@gondor.apana.org.au Return-path: Received: from bastet.se.axis.com ([195.60.68.11]:40104 "EHLO bastet.se.axis.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751612AbdARNyU (ORCPT ); Wed, 18 Jan 2017 08:54:20 -0500 Sender: linux-crypto-owner@vger.kernel.org List-ID: From: Rabin Vincent tcrypt is very tight-lipped when it succeeds, but a bit more feedback would be useful when developing or debugging crypto drivers, especially since even a successful run ends with the module failing to insert. Add a couple of debug prints, which can be enabled with dynamic debug: Before: # insmod tcrypt.ko mode=10 insmod: can't insert 'tcrypt.ko': Resource temporarily unavailable After: # insmod tcrypt.ko mode=10 dyndbg tcrypt: testing ecb(aes) tcrypt: testing cbc(aes) tcrypt: testing lrw(aes) tcrypt: testing xts(aes) tcrypt: testing ctr(aes) tcrypt: testing rfc3686(ctr(aes)) tcrypt: all tests passed insmod: can't insert 'tcrypt.ko': Resource temporarily unavailable Signed-off-by: Rabin Vincent --- crypto/tcrypt.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/crypto/tcrypt.c b/crypto/tcrypt.c index ae22f05..9a11f3c 100644 --- a/crypto/tcrypt.c +++ b/crypto/tcrypt.c @@ -22,6 +22,8 @@ * */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include #include #include @@ -1010,6 +1012,8 @@ static inline int tcrypt_test(const char *alg) { int ret; + pr_debug("testing %s\n", alg); + ret = alg_test(alg, alg, 0, 0); /* non-fips algs return -EINVAL in fips mode */ if (fips_enabled && ret == -EINVAL) @@ -2059,6 +2063,8 @@ static int __init tcrypt_mod_init(void) if (err) { printk(KERN_ERR "tcrypt: one or more tests failed!\n"); goto err_free_tv; + } else { + pr_debug("all tests passed\n"); } /* We intentionaly return -EAGAIN to prevent keeping the module, -- 2.1.4